CN219873859U - Battery module and stack overlap joint formula battery box - Google Patents

Abstract

The utility model discloses a battery module and a stacking lap joint type battery box, which belong to the technical field of battery replacement, and are characterized in that the battery module comprises a cuboid box body, a battery cavity, a section bar plate and a shape cavity, wherein the box body is provided with four side plates, an upper cover plate arranged on the upper part of the side plates and a bottom plate arranged on the lower part of the side plates; the battery cavity is a sealed cavity formed inside the box body; the profile plates at least form four side plates of the box body; the shape cavities are arranged in the section bar plate, and the shape cavities enable the section bar plate to form a plurality of rib separating bodies. The battery module is not easy to damage, lighter in weight, strong in expansibility and low in operation and maintenance cost.

Description

Battery module and stack overlap joint formula battery box

Technical Field

The utility model belongs to the technical field of battery replacement, and particularly relates to a battery module and a stacking lap joint type battery box.

Background

With the continuous development and maturity of new energy technologies, new energy vehicles are gradually replacing traditional automobiles. Currently, electric truck technology is rapidly developed and widely used. The truck belongs to a heavy-duty vehicle, mileage anxiety is still the biggest problem of development and application of an electric heavy truck, and the electric quantity is imperative to be increased on the basis of the existing structural space of the truck.

The existing battery box mounting structure on a heavy truck is generally as follows: the battery box of the heavy truck is arranged between the truck head and the cargo box, the width of the space cannot exceed 850mm, the battery box is of an integral frame structure, the length of the battery box is adapted to the width of the truck, namely, the width cannot exceed 2500mm, and the height of the 280-degree battery box is generally about 2 meters.

The defects and shortcomings of the conventional battery box for the heavy truck are as follows:

1. the battery box with the integrated steel framework type battery frame has large overall elastic modulus, the overall structure of the battery box assembled with the vehicle-mounted battery bottom bracket is large in height, the impact on the vehicle in the horizontal direction is large when the vehicle is suddenly stopped, the phenomenon of structural fracture is easy to occur, and the structural potential safety hazard is large.

2. The battery box with the integrated steel frame type battery frame has the advantages that the structural weight is large, the horizontal impact received by the vehicle during sudden stop is large, the phenomenon of structural fracture is easy to occur, and the structural potential safety hazard is large.

3. The battery box with the integrated steel frame type battery frame has the advantages that the battery pack part installed inside is exposed, and the protection effect is poor.

4. The battery box with the integrated steel frame type battery frame is fixed in structure height, and the battery box formed after the battery pack is carried is difficult to expand in capacity and has low adaptability.

5. The battery box with the integrated steel frame type battery frame has the advantages that the battery pack of a certain unit is required to be disassembled and maintained when the battery pack breaks down, and the operation and maintenance cost is high.

In order to overcome the problems, the scheme is that the chassis of the vehicle and the battery box are integrated into a whole, the purpose of reducing the gravity center of the battery is achieved, the electric passenger car also adopts a structural mode that the car body is combined with the battery frame, the space is fully utilized, the electric quantity is improved, the mileage is increased, however, the problem of high maintenance cost of the vehicle also exists in the mode, and once the battery fails, the car body needs to be disassembled or scrapped, and the operation and maintenance costs are extremely high.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a battery module and a stacking lap joint type battery box, which solve the problems of easy breakage, poor protection, high operation and maintenance cost and the like of the existing integral truck battery box.

The utility model is realized in this way, a battery module is characterized by comprising a cuboid box body, a battery cavity, a section bar plate and a shape cavity, wherein the box body is provided with four side plates, an upper cover plate arranged on the upper part of the side plates and a bottom plate arranged on the lower part of the side plates; the battery cavity is a sealed cavity formed inside the box body; the profile plates at least form four side plates of the box body; the shape cavities are arranged in the section bar plate, and the shape cavities enable the section bar plate to form a plurality of rib separating bodies.

In the above technical solution, preferably, the profile plate forms a bottom plate of the case.

In the above technical solution, preferably, the device includes an upper positioning portion and a lower positioning portion, the upper positioning portion is disposed on an upper portion of the case, and the lower positioning portion is disposed on a lower portion of the case and can vertically engage with the upper positioning portion of the other case.

In the above technical solution, preferably, the upper positioning portion is a ridge provided on an upper end surface of the side plate, and the lower positioning portion is a groove provided on a lower end surface of the side plate; the ridge and the groove are formed by bending an upper plate body and a lower plate body of the profile plate, and the ridge and the groove form a four-side closed-loop structure along the edges of the four side plates.

In the above technical solution, preferably, the device includes an upper connecting portion and a lower connecting portion, the upper connecting portion is disposed on the upper portion of the case, and the lower connecting portion is disposed on the lower portion of the case and can be connected with the upper connecting portion of another case through a locking member.

In the above technical solution, preferably, the upper connecting portion and the lower connecting portion are prisms protruding from the side surfaces of the side plates, and the upper connecting portion and the lower connecting portion form a quadrilateral prism structure with four side plate edges; the lower end face of the upper connecting part is provided with a lower hook groove, and the upper end face of the lower connecting part is provided with an upper hook groove; the locking piece comprises an upper hook body, a lower hook body and a locking bolt, wherein the upper hook body is provided with an upper hook part which is hooked with an upper hook groove of the upper connecting part, the lower hook body is provided with a lower hook part which is hooked with a lower hook groove of the upper connecting part, and the locking bolt is connected with the upper hook body and the lower hook body in a closing manner.

In the above technical scheme, preferably, the side plates include two symmetrical long side plates and two symmetrical wide side plates, the lower parts of the two long side plates are provided with side plate parts formed by bending inwards at right angles, and two side end surfaces of the bottom plate are connected with side end surfaces of the side plate parts through inserting and clamping parts inserted in the horizontal direction and clamping groove parts.

In the above technical solution, preferably, the lower parts of the inner sides of the two wide side plates are provided with notches, and the end surfaces of the two sides of the bottom plate are provided with insert plate parts inserted into the notches.

In the above technical solution, preferably, an annular end surface of the upper positioning portion and/or the lower positioning portion is provided with an annular seal groove.

The utility model has the advantages and effects that:

1. the battery module provided by the technical scheme, the battery box is formed by vertically stacking the fasteners, and compared with the existing battery box with an integral framework, the battery module is small in elastic modulus, the structure is not easy to deform and damage after being impacted by stress, and potential safety hazards are reduced.

2. The section bar plate forming the box body of the battery module is a hollow plate with a shape cavity, and can be made of aluminum alloy plates with lighter mass and thinner thickness, so that the overall mass of the battery box is greatly reduced, the light weight of the battery box is realized, and the impact stress is reduced.

3. The battery box of the battery module is integrally sealed, and the sectional material plate with the shaped cavity has an energy absorption function, so that the battery box can better protect an internal battery pack and is dustproof.

4. The battery module can select the stacking layer number according to specific installation space and truck power distribution requirements, can also adjust according to specific requirements at any time, and is strong in expansibility and high in adaptability.

5. The stacking type battery module is connected, so that the lifting and maintenance are convenient, and only the connecting piece for connecting each layer of battery module is required to be removed during the maintenance, so that the whole module is not required to be lifted and replaced.

Another object of the present utility model is to provide a stacking and overlapping type battery box, wherein the battery box comprises a chassis and the battery modules vertically arranged on the chassis in a layered manner, and the battery modules are the battery modules.

Drawings

Fig. 1 is a schematic view of a structure of a battery module according to the present utility model;

FIG. 2 is a schematic view of the structure of the long side plate of the present utility model;

FIG. 3 is a schematic view of the structure of the base plate of the present utility model;

FIG. 4 is a schematic view of the structure of the wide side plate in the present utility model;

FIG. 5 is a front view of the connection of the long side plate, bottom plate and top cover plate of the present utility model;

FIG. 6 is a schematic view of the structure of the locking member of the present utility model;

fig. 7 is a schematic view of a connection structure of a battery module according to the present utility model;

fig. 8 is a schematic view of the structure of the battery case in the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides a battery module and a stacking lap joint type battery box, which are difficult to damage, lighter in weight, strong in expansibility and low in operation and maintenance cost. For further explanation of the structure of the present utility model, the detailed description is as follows in connection with the accompanying drawings:

example 1

Referring to fig. 1 to 7, a battery module includes a rectangular box having four side plates, an upper cover plate 1 mounted on the upper portions of the side plates, and a bottom plate 2 mounted on the lower portions of the side plates. The vertical height of cuboid is less than the length of upper cover plate and bottom plate, and cuboid overall shape is six flat box, easily laminar stack. The side plates comprise a long side plate 3 and a wide side plate 4. The battery pack is mounted inside the battery module. The battery pack is an outsourced battery unit.

The box body comprises a battery cavity, a section plate, a shape cavity, an upper positioning part, a lower positioning part, an upper connecting part and a lower connecting part.

The battery cavity is a space for arranging a battery pack in the box body, is a sealed cavity formed in the box body, is a rectangular cavity formed by enclosing four side plates, an upper cover plate and a bottom plate, and has specific dimensions according to the matched battery pack design. In this embodiment, in order to guarantee that the battery package is installed stably in the battery chamber, set up the rigid beam body in the battery chamber of box, the rigid beam body can be the both ends weld in the section bar of curb plate inner wall, the inside cross beam structure that forms of battery chamber.

The profile plates at least form four side plates of the box body. In this embodiment, the profile plates constitute four side plates of the box and a bottom plate of the box. The plurality of shape cavities are arranged in the section bar plate, and the shape cavities enable the section bar plate to form a plurality of rib separating bodies in the section bar plate. Specifically, the profile plate is an aluminum alloy profile with a shaped cavity, the aluminum alloy is integrally plate-shaped, and is provided with an inner plate body and an outer plate body which are respectively positioned at the inner side and the outer side, and the directions of 'inner' and 'outer' refer to the inner side and the outer side of the box body. The inner plate body and the outer plate body are of plate body structures in mutual planes, a plurality of rib separating bodies which are integrally formed with the inner plate body and the outer plate body are arranged between the inner plate body and the outer plate body, and the rib separating bodies are of partition plate structures, so that a plurality of shaped cavities which penetrate through the side ends of the profile plate beams are formed between the inner plate body and the outer plate body. The thickness of the inner plate body, the outer plate body and other materials of the sectional material plate is very thin under the advance of meeting the same strength design requirement, compared with the existing steel structure frame body structure, the sectional material plate has low manufacturing cost, the formed box body is greatly reduced, and the lightweight design of the battery module is realized.

Furthermore, the lower parts of the two long side plates are provided with side plate parts 5 which are formed by bending inwards at right angles, the side plate parts are right angle bending parts which are integrally formed at the lower parts of the long side plates, and the basic structure of the side plate parts is the same as that of the long side plates. The two side end surfaces of the bottom plate are connected with the two side end surfaces of the side plate part through the inserting and clamping part 2-1 and the clamping groove part 5-1 which are inserted in the horizontal direction. In this embodiment, specifically, the engaging groove portion is formed in the inner end surface of the side plate portion, and is a groove formed by extending portions of the outer plate body and the inner plate body constituting the side plate portion together with the side end surface of the side plate portion. The inserting part is formed on the end surfaces of two sides of the bottom plate, is a bulge formed by the outer plate body and the inner plate body of the bottom plate laterally protruding from the side surface of the bottom plate, and is combined with the groove to realize the installation of the bottom plate between the two long side plates.

The lower parts of the inner sides of the two wide side plates are provided with notches 4-1, and the end surfaces of the two sides of the bottom plate are provided with plugboard parts 2-2 which are inserted into the notches. The notch is a rectangular opening formed in the lower portion of the inner plate body of the wide side plate, and the plugboard portion is a portion of the bottom plate, in which the rib-isolating body extends into the rectangular opening.

The side edges of the wide side plate and the long side plate are in inclined connection fit by adopting an angle of 45 degrees. After the two long side plates, the two wide side plates and the bottom plate are connected in the mode, the contact edge seam of the profile plate is welded and connected. The bottom plate is a water-cooled plate.

The upper positioning part 6 and the lower positioning part 7 are positioning structures for stacking and connecting the battery modules. The upper positioning part is arranged at the upper part of the box body, and the lower positioning part is arranged at the lower part of the box body and can be vertically embedded with the upper positioning part of the other box body. In this embodiment, specifically, the upper positioning portion is a ridge disposed on the upper end surface of the side plate, the lower positioning portion is a groove disposed on the lower end surface of the side plate, the ridge and the groove are all integrally formed in the manufacturing process of the profile plate, from the structural point of view, the ridge and the groove are formed by bending an upper plate body and a lower plate body of the profile plate, the ridge and the groove form a four-side closed-loop structure along the edges of the four side plates, and the ridge on the upper portion of the battery module box below is embedded and clamped into the groove on the lower portion of the battery module box above, so as to realize stacking and positioning of the battery modules. In order to facilitate the embedding and positioning, the two side surfaces of the convex ridge are inclined surfaces to form a convex ridge structure with a narrow upper part and a wide lower part, and the two side surfaces of the groove are designed with inclination matched with the convex ridge. The annular end surfaces of the upper positioning part and the lower positioning part are provided with annular sealing grooves, rubber rings are assembled in the annular sealing grooves, and the tightness of the stacking positions of the two stacking battery modules is improved.

The upper connecting part 8 and the lower connecting part 9 are locking connecting parts of two stacked battery modules, the upper connecting part is arranged at the upper part of the box body, and the lower connecting part is arranged at the lower part of the box body and can be connected with the upper connecting part of the other box body through a locking part 10. In this embodiment, specifically, the upper connecting portion and the lower connecting portion are prisms protruding from the side surfaces of the side plates, and form a four-sided prism structure with four side plate edges. The ribs are outwards annular bulges formed on the upper edge and the lower edge of the side plate, and the locking piece can lock the battery module by applying locking tension to the two ribs.

Further, a lower hook groove 8-1 is formed in the lower end face of the upper connecting portion, an upper hook groove 9-1 is formed in the upper end face of the lower connecting portion, and the upper hook groove and the lower hook groove are annular. The locking member comprises an upper hook body 10-1, a lower hook body 10-2 and a locking bolt 10-3, wherein the upper hook body is provided with an upper hook part which is hooked with an upper hook groove of the lower connecting part, the lower hook body is provided with a lower hook part which is hooked with a lower hook groove of the upper connecting part, and the locking bolt pair is connected with the upper hook body and the lower hook body. In this embodiment, specifically, the lower hook body and the lower hook portion may form a C-shaped locking member, where the upper hook portion and the lower hook portion are structural portions of an upper hook slot and a lower hook slot of the hook clip, and a hook arm portion formed outside the structural portion is provided with a vertically penetrating handle and a vertically penetrating hole, and the locking bolt penetrates the handle and the hole and is used for applying a vertical locking force to the upper hook body and the lower hook body. The handle and the hole are of a sinking groove design sinking into the outer side surface of the hook arm, so that the bolt can be protected.

In this embodiment, the upper cover plate is a single-layer aluminum profile plate body, the edge of the upper cover plate is installed on the upper portion of the side plate through screws, and a rubber sealing gasket 11 is arranged between the upper cover plate and the upper end face of the side plate.

Example two

Referring to fig. 8, a stacked and lapped battery box includes a chassis 12 and a battery module according to an embodiment in which the chassis is vertically layered, and further, the chassis is of a steel structure frame structure, the width of the chassis is greater than that of the battery module, and water-cooling pipelines and low-voltage wire harnesses are respectively arranged on two sides of the width. The lower part of the underframe is provided with a guide structure connected with the power exchange collet and the like. The underframe structure is the same as the lower structure of the existing battery frame, and is used as a lower carrying device of the stacked battery modules for installing other matched equipment of the battery box and for being connected with the battery replacement underframe. The upper hook body is used for locking and fixing the lowest layer battery module loaded on the underframe.

On the uppermost layer battery module, an upper frame 13 can be installed in the same form through a lower hook body, and the upper frame is of a rigid frame structure so as to facilitate the integral hoisting of the battery box.

The cooling water pipelines between the battery modules can be welded and connected after being assembled and formed, and the electric connection between the battery modules arranged in a stacking way is not limited in structural form.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a battery module, its characterized in that includes the box of cuboid, the box has four curb plates, installs in the upper cover plate on curb plate upper portion and installs in the bottom plate of curb plate lower part, still includes:

a battery chamber which is a sealed chamber formed inside the case;

the profile plate at least forms four side plates of the box body;

the shape cavity is arranged in the section bar plate, and the shape cavity enables the section bar plate to form a plurality of rib isolation bodies.

2. The battery module according to claim 1, wherein the profile plate constitutes a bottom plate of the case.

3. The battery module according to claim 1, comprising an upper positioning portion provided at an upper portion of the case, and a lower positioning portion provided at a lower portion of the case and vertically joggable with the upper positioning portion of another case.

4. The battery module according to claim 3, wherein the upper positioning portion is a ridge provided at an upper end surface of the side plate, and the lower positioning portion is a groove provided at a lower end surface of the side plate; the ridge and the groove are formed by bending an upper plate body and a lower plate body of the profile plate, and the ridge and the groove form a four-side closed-loop structure along the edges of the four side plates.

5. The battery module according to claim 1, comprising an upper connection part and a lower connection part, wherein the upper connection part is provided at an upper portion of the case, and the lower connection part is provided at a lower portion of the case and is connectable with the upper connection part of another case through a locking member.

6. The battery module according to claim 5, wherein the upper and lower connection parts are prisms protruding from the side surfaces of the side plates, the upper and lower connection parts forming a four-sided prism structure surrounding the edges of the four side plates; the lower end face of the upper connecting part is provided with a lower hook groove, and the upper end face of the lower connecting part is provided with an upper hook groove; the locking piece comprises an upper hook body, a lower hook body and a locking bolt, wherein the upper hook body is provided with an upper hook part which is hooked with an upper hook groove of the upper connecting part, the lower hook body is provided with a lower hook part which is hooked with a lower hook groove of the upper connecting part, and the locking bolt is connected with the upper hook body and the lower hook body in a closing manner.

7. The battery module according to claim 2, wherein the side plates include two symmetrical long side plates and two symmetrical wide side plates, the lower parts of the two long side plates are provided with side plate parts formed by bending inwards at right angles, and the two side end surfaces of the bottom plate and the side end surfaces of the side plate parts are connected through a horizontally inserted card part and a card slot part.

8. The battery module according to claim 7, wherein the lower inner portions of both the wide side plates are provided with notches, and the opposite side end surfaces of the bottom plate are provided with insert plate portions inserted into the notches.

9. The battery module according to claim 3, wherein the annular end face of the upper positioning portion and/or the lower positioning portion is provided with a circumferential seal groove.

10. A stacked and lapped battery box comprising a bottom frame and the battery modules vertically arranged on the bottom frame in a layered manner, wherein the battery modules are the battery modules according to any one of claims 1 to 9.